4-Prong Powder-Coated Retort Clamp Subcategory_Inorganic Compounds a 75mm-aperture double-concave glass lens

a 75mm-aperture double-concave glass lens at 100mm focal length spreads light through optically worked surfaces and ground polished edges

and a month-labeled base for tracking orbital positions through the year

Larger right-angle glass prism at 2 by 2 by 2

9-piece organic chemistry and distillation glassware set provides comprehensive apparatus for laboratory synthesis and separation procedures

Coated nylon demonstration cord 30 meters long on a cardboard cone

4-Prong Powder-Coated Retort Clamp Subcategory_Inorganic Compounds a 75mm-aperture double-concave glass lensFour prong cork lined laboratory clamp in powder coated steel, opening up to 3 inches for gripping flasks and cylindrical apparatus without scratching glassware.